ABSTRACT
Otoacoustic emissions (OAEs) and auditory evoked potentials (AEPs) exhibit sex differences,
and these are present in infants and children as well as in adults. OAEs and AEPs
are also different in several special populations of subjects. For females having
opposite-sex cotwins (OSDZ females) and for homosexual and bisexual females, average
OAE measures are shifted toward those of males. Certain AEP measures from homosexual
and bisexual females also are masculinized. Certain AEP measures from homosexual males
are hypermasculinized. These and other facts can be explained by assuming that these
special populations received greater than normal exposures to androgens at some point(s)
during development, possibly during prenatal development. The implication is that
the auditory system may be capable of providing insights into the processes of human
development and sexual differentiation.
KEYWORD
Homosexuality - auditory system - masculinization - hypermasculinization - androgens